If you want a powerful AI tool to help you brainstorm and come up with ideas, ChatGPT is a great choice. The tool has a simple interface for a range of tasks, including sparking ideas and getting work done. It's free to use, so you can try it out for a quick fix without a long-term commitment.
Another top contender is TheBrain, which offers a digital workspace to organize, connect and visualize your ideas and files. It's got AI-powered brainstorming and note-taking, along with other tools like visual collaboration, file management and instant search. It's available on multiple platforms and offers a free version for personal use with a 30-day trial for the Pro version.
TreeMind is another option, particularly if you like mind mapping for brainstorming. The online service offers a variety of diagram styles, including mind maps and fishbone diagrams, with AI-generated options. It's got real-time collaboration, a knowledge base and a free plan with basic features, so it's good for individuals and teams.
If you want to use a voice interface, Talknotes is an option. It transcribes voice recordings into formatted text, so you can use it to capture ideas. It supports multiple languages and offers a variety of export options, along with different subscription plans. It's good for brainstorming, content creation and voice journaling.